Motorola T2260, Service Manual

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66 4/3/01
CDMA 800/1900
Software.
Flash the phone with right version, or replace to the programmed Flash part
Verify by EST Box
Connect the J3901-J3910 port to EST box BDM cable.
Take off the R1181 0Ohm resister and put the 1kOhm resister to the R1180 DNP
Execute the Vision Click tool and set up the MCU register of EST
Read the Flash code from $000000 and verify the the right hex code can be read.
Test the SRAM area $600000 - $63FFFF via memory test diagnostics tool
If the Flash or SRAM defect is found, Replace the parts.
No Display
Connection Failure
Check the 16pin J3200 Display Connector’s connection to Flex cable of Display.
If the connection defective is found, repair the connection or replace the 16pin J3200 connector
Electrical Interface Failure
Check the J3200 soldering status and re-solder the connector
Check the interface signal LCD logic_2.75 (measured via R3200), LCD reset signal (measured via
R3201) and D0-7, EL, AL0 signal from the board to LCD.
If more than one signal defect is found, repair the cause.
Display module Defect
Assemble the Display module to a known good Shark main board, and check the function.
If the display fail is not solved, replace the Display module with new good one.
Display is erratic or partial no display
Connection Failure
Check the 16pin J3200 Display Connector’s connection to Flex cable of Display
If the connection defective is found, repair the connection or replace the 15pin J3200 connector
Display module Defect
Assemble the Display module to a known good Shark main board, and check the function.
If the display fail is not solved, replace the Display module with new good one.